An excerpt from a definition:

". . . by incorporating "purpose" to complement "function", where function is 'full spectrum work in multiple planes using multiple joints including full range of motion that is proprioceptively demanding. . .”   ACK!  ENOUGH!!

Tall talk and academic rumination don’t make champions.  (Blah, blah, blah, just get in the pool already!)  And as for what you should and shouldn’t do, well--the list is endless and often confusing.  The correct answer to how to train with purpose and attain success begins with simple steps: